DDZX13B-13 Equivalent & Substitute Parts

Part Overview

The DDZX13B-13 is a Zener diode manufactured by Diodes Incorporated, rated at 13 V nominal with 300 mW maximum power dissipation in a surface mount SOT-23-3 package. This component is classified as Active and maintains full product availability. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications without design modification.

Substiute Parts

DDZX13B-13

Diodes IncorporatedIn Stock: 847DDZX13B-13 Datasheet

Current PartRFQ

DDZX13B-7

Diodes IncorporatedIn Stock: 30154DDZX13B-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of Zener diodes is determined by matching the following critical parameters:

1. Zener Voltage (Vz): Must be 13 V nominal with ±3% tolerance
2. Power Rating: Must be rated at 300 mW maximum
3. Package Type: Must be SOT-23-3 (TO-236-3, SC-59) for mechanical and thermal compatibility
4. Impedance (Zzt): Must not exceed 14 Ohms maximum
5. Reverse Leakage Current: Must be 100 nA @ 10 V or lower
6. Forward Voltage: Must be 900 mV @ 10 mA or lower
7. Operating Temperature Range: Must support -65°C ~ 150°C
8. Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The DDZX13B-7 meets all specified electrical and mechanical parameters and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The DDZX13B-7 is a direct substitute for the DDZX13B-13. Both components are manufactured by Diodes Incorporated, maintain Active product status, and carry identical electrical specifications and compliance certifications. Selection between these parts may be based on inventory availability and lead time requirements. The DDZX13B-7 currently maintains higher inventory levels (30,100 pcs) compared to the DDZX13B-13 (828 pcs). Both parts satisfy ROHS3 compliance and REACH unaffected status requirements.

Frequently Asked Questions (FAQ)

Q: Can DDZX13B-7 be used as a direct replacement for DDZX13B-13?

A: Yes. Both parts are identical in electrical specifications, package type, and compliance ratings. No circuit design changes are required.

Q: Are there any differences in thermal performance between these parts?

A: No. Both parts are rated at 300 mW maximum power dissipation and support the same operating temperature range of -65°C ~ 150°C.

Q: What does the packaging designation difference (B-13 vs B-7) indicate?

A: The suffix designates the tape and reel configuration or manufacturing batch code. The electrical and mechanical specifications remain identical.

Q: Is the SOT-23-3 package compatible with existing PCB layouts designed for DDZX13B-13?

A: Yes. Both parts use the identical SOT-23-3 package footprint (also designated TO-236-3 or SC-59), ensuring mechanical and thermal compatibility with existing board designs.

Q: Do both parts meet current environmental compliance standards?

A: Yes. Both DDZX13B-13 and DDZX13B-7 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the ±3% tolerance specification?

A: The ±3% tolerance indicates the maximum deviation of the actual Zener voltage from the 13 V nominal rating. Both substitute parts maintain this tolerance specification.